Motorcycle frame



FIG. 1 is a perspective view of a motorcycle frame showing my design;

FIG. 2 is a front elevational view of the design shown in FIG. 1;

FIG. 3 is a rear elevational view of the design shown in FIG. 1;

FIG. 4 is a top plan view of the design shown in FIG. 1;

FIG. 5 is a bottom plan view of the design shown in FIG. 1;

FIG. 6 is a left side elevational view of the design shown in FIG. 1;

FIG. 7 is a right side elevational view of the design shown in FIG. 1;and,

FIG. 8 is a left side elevational view of the design shown in FIG. 1,with certain elements being illustrated in broken lines to show theenvironment.

The ornamental design for a motorcycle frame, as shown and described.